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A. R. BROWN.

MOLD FOR MAKING AGUPUNOTURE INSTRUMENTS No. 82,686.

Patented Oct. 63,1868.

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Letters Patent No. 82,686, dated October 6, 18 68.

IMPROVEMENT IN MOULDS FOR MAKlH G AGUPUNCTUBEINSTRUMENTS.

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TO ALL WHOM IT MAY CONCERN: a

Be it known that I, Anson RQ BROWN, M. D., of Albion, in the county ofCalhoun, and State of Michigan,

have invented anew Setting-Mould for the Construction of thePuncturing-Qlanger-Heads in Acupuncture; Instruments; .and I do herebydeclare that the following is a full, clear, and eia'ct description ofthe same,. I

reference being had to the annexed drawings, forming a part of thisspecification, in which-- Figure 1 is an elevation in section of thesetting-mould and enclosed plunger-head,- as cast therein.

Figure 2 is a plan view of the former, composing a part of the mould.

Figure 3' represents the plunger-head and stem, armed with theacupuncturiug-lanoets, and detached from the mould. l

. Similar letters of reference indicate like parts in all the figures.

The necessity for a special mould in which to cast the plungers ofacupuncture-instruments, andto set the puncturiu'g-lancets -within suchcasting, arises from the great difiiculty and expense of adjusting themby any ordinary mechanical manipulation, for the lancets are arranged inpairs, and converge together untillthey just touch eachothenafter thefashion of the blades of a drawing-pen, so as to deposit theirritating-fluid in the punctures, in a manner somewhat analogous tothat in which the ink is deposited by the said pen on'the paper.

The object of my invention is to dispense with all hand-skill in thesetting and adjusting the lancts in-the plunger-heads themselves, andtoset them up and adjust them within a mould, in permanent sockets, andin a ready and'undeviating manner, so that when the melted metal ispoured'into the mould to form the plunger and stem, it will flow aroundthe butt-ends of the lancets, and when the plunger is removed, thelancets will be perfcctly adjusted, ready for use, and set firmly in themetal. p w

The manner in which I construct the former-disk, represented at F, andconstituting the most'important part of the mould, (FigureL) is to erecta turned mandrel, provided with two thin disk-plates, at a properdistance apart, the upper plate being perforated with slots, as seen inFigure 2, to receive the body of the lance-ts, and the lower platehaving slight indentations, to receive the two converging points 'in'onedepression.

A casing is then formed around the plates, and soft metal is poured inaround .the lancets, which, in this case, merely act as cores to formthe mortises in said former, in which mortises the blades of similarlancets are inserted, to ca's't the metal around their projectingbutt-ends, as aforesaid, in the construction of the plunger and stem,indicated respectively by theletters E and B. i

I generally construct the mould for the plungers of metal, and bore outthe cavities, both for the reception of the casting, and also for theinsertion of the former, in which the lancets are placed, in themortises, cast as heretofore'explained,

C is a vent-wire, and D is a wire core,ifor casting a holes in theplunger, to receiver. springffor throwing said plunger back after thelancets have acted. v v

It will be seen that the former, F, is furnished at the bottom with asoft-metal plate, indicated atG. This plate is designed to support orgauge the points of the iancets, shown by thevfigures 1, 2, 3, 4,'&c.,so that they will lie on a true plane when placed in the m ortises, withtheir butt-ends projecting upwarvds into the mould,

as in fig. 1.

Soft metal is poured in at the sprue-holes to fill the mould, and, whencold, the casting and former are withdrawn, and the lancets are sprungout of the angular mortises in the former, leaving the cast plunger withthe lancets truly cast in it, as seen in Figure 3. I

What I claim as my invention, and desire to secure by Letters Patent, isthis I claim the former, F, having slits or mortises east through it, asdescribed, to receive the blades of puncturing-lancets, 1, 2, 3,850., incombination with a mould for casting the plungers E B, substantially 'asand for the purpose specified.

Y A. R. BROWN, M. D.

Witnesses:

WM. L. Bnowh, Rranzr Loon.

